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In recent years, much attention has been paid to the safety at roadworks.
The warning signs are not only shows forbiddance but warnings.
Yet, the warning signs can completely take effact only when a set or more signs are used together at the same time. Therefore, we believe that the design of warning signs needs to be improved.
Oriental Institute of Technology University
Taipei, Taiwan
Oriental Institute of Technology University
Taipei, Taiwan
Ting-You,Zhang
Pei-Yu,Lai
Fu-Ji,Jian